The Usefulness and Significance of Naso-pharyngo-laryngo-tracheal Fiberscopy in Thyroid Surgery - Sugenoya, A; Kobayashi, S; Kasuga, Y; Yokozawa, T; Kaneko, G; Hanamura, N; Senga, O; Miyakawa, M; Iida, F (Endoscopy, 1987)